Finding the Fourth Proportional to 2,290.35, 3,160.71 and 1,295.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.35 : 3,160.71 = 1,295.60 : x
2. Step 2: Convert to fraction form
   2,290.35/3,160.71 = 1,295.60/x
3. Step 3: Cross multiply
   2,290.35x = 3,160.71 × 1,295.60
4. Step 4: Simplify right side
   2,290.35x = 4,095,015.88
5. Step 5: Solve for x
   x = 4,095,015.88/2,290.35
6. Step 6: Final answer
   x = 1,787.94